Heating apparatus.



J. M. W. KITCHEN.

HEATING APPARATUS. APPLICATION FILED JUNE 22. 1910,

Patented May 30, 191.1.

Inventor.

Atty JOSEPH MOSES WARD KITCHEN, OF EAST ORANGE, NEW JERSEY.

HEATING APPARATUS.

Specification of Letters Patent.

Patented May 30, 1911.

Application filed June 22, 1910. Serial No. 568,377.

' To all whom it may concern:

boiler which is designed to meet the need of certain installations, asfor example where there is little available head room, such as under theside walks, where the smoke outlet must be at the front of the boiler,where soft bituminous coal is used, and where frequent stoking attentioncan be given to the apparatus.

The following principles are specially applied in this invention. 1.Securing a long horizontal run for the burning gases before much heat islost from the gases, with provision for securing an adequate mixture ofair with the gases volatilized from the fuel. 2. Securing an unusuallythorough transmission of the heat to water through a vertical andhorizontal counter-current travel of the heating gases and the feedwater supplied to the boiler. In several patents granted to me and inco-pending applications I have claimed the application of the countercurrent principle in heating devices, but in the present invention Iclaim the application of this principle in connection with peculiarforms of boiler sections.

In the drawings: Figure 1 represents a vertical elevational view of oneside of a boiler comprising my invention, parts being in section. Fig. 2represents a cross horizontal section of the boiler taken on the lineaa, Fig. 1. Fig. 3 represents a part of a modification of the boilerspecially intended for high pressure heating in which flange unionsbetween the sections are substituted for the push nipple unions shown inFig. 1. Fig. 4: represents a part of one of the sections of the boilershown in Fig. 3.

The reference characters in part indicate as follows:

A is the front section of the boiler.

B are intermediate sections of the boiler.

Q is the back section of the boiler.

D is the furnace of the boiler.

E is a bridge wall.

F is sustaining brick work or base.

G is a grate bar.

' H is a flange union.

H is a slit in the fin.

I is a push nipple hub.

J is a contracted water passage.

The boiler here described is particularly intended to burn bituminouscoal without smoke, securing a practically perfect combustion. The fuelis fed frequently over the front part of the grate surface, and afterbelng coked is pushed backward and distributed over the grate bars. Asu'flicient supply of air is introduced from the front of the boilerover the fire through the slide D of the door D The air passes up overthe partition D and downward and out through the apertures D, which aredistrib uted horizontally in a line across the lower level of the innerface of the door D The gas travel in the combustion chamber D is fromthe front to the extreme rear of the boiler. No openings are provided inthe bottom of the sections B for the gases to rise between the sectionsexcept at the extreme rear of the boiler. There is a gas passing openingC provided at the bottom of the rear section C. The inter-spaces betweenthe bottom of the sections are closed with asbestos cement, except' atthe rear. Hence, the gases partially cooled by the air for combustionsupplied through the door D rising up against the bottoms of the frontsections B of the boiler do not lose much heat to the water in thosesections. This is specially intended so that the water in the frontsection shall be cooler than the water in the rear sections, and thecooler water is thus able to pick up low degrees of heat that areusually lost, in the forward counter-current travel of the-gases and thewater. The arrows indicate the travel of the gases. By the time theadmixed combustible gases and air have reached the bridge wall they havebecome heated to a point. above the ignition temperature and asubstantially perfect combustion is effected. The gases are allowed torise through the opening C to the crown sheet of the boiler, and travelforward and downward and out through the smoke exit A at the front ofthe boiler, passing underneath the baflle A,

which is hinged to open at the top to allow of a more direct updraft ifnecessary;

A is the bafiie operating han-dle.

In this boiler is applied both the horizontal counter-current and thevertical countercurrent travel of gases and water in the sections. Coolfeed water enters at the bottom of the sections from the front A, andthe heated water emerges at the top level of the boiler at the rearthrough the exit C the water being progressively heated in thecounter-current travel of the water and the gases. In case the boiler isused for steam' ing, steam outlets B would be provided from the tops ofseveral of the intermediate sections B.

Provision is made for cleaning the sections of the apparatus through thedrop door A 7 The boiler has a brick setting F, and a considerablelateral part of the sections rest on this brick setting, and thisprevents much heat from being absorbed into the bottoms of the sections,and does much to maintain a high heat in the gases until combustion hasbeen effected.

In Fig. 2, B represents the water level. B represents strengtheningridges cast inside the section. B represents gas passages between thevertical tubes B B represents triangular vertical ridges or fins cast onthe exterior of the vertical water tubes B B represents ridges or finscast on the inside of the crown plate of the boiler. B represents ahorizontal water tube. B represents the bottom transverse water tube ofthe section B. B is a tube connecting B and 13''. H represents slits inthe transverse fins I-I which fins are cast integral with the sides ofthe tubes B the horizontal tubes B and the crown sheet H These fins orridges contract the size of the gas passages B, increase the heattransmission and act to secure a self cleansing of the heating surfacesfrom soot and ash dust that would otherwise cling to the exterior of thewater tubes of the sections.

What I claim as new is: p

1. In a heating apparatus, the combination of (1) connected verticalchambered sections, (2) a base for said sections, said base comprisingnon-conducting side walls preventing lateral transmission of heat fromthe fire mass in said apparatus, a shaking grate, provision for undergrate and over fire mass air introduction, a non-conducting bridge walland a cavity back of said bridge wall, said cavity containing a gasoutlet at a high level, said ash pit and said cavity being divided fromeach other at a low level, (3) a combustion chamber in said apparatushaving means for the elongated horizontal travel of the gases evolvedfrom the fuel in said apparatus, (4) means for a controlled equablydiffused introduction of air for combustion above the fire mass of saidapparatus, (5) a art of said apparatus separate from and ivided fromsaid combustion chamber by chambered strata ofwater and heatnon-conducting means except as for a transversely extended horizontallydisposed exit for heating gases at a high level at the rear of saidcombustion chamber'through which exit passes gases from said combustionchamber to said part, said part comprising means for the counter-currenttravel of the heating gases and the water to be heated passing throughsaid part, said part comprising chambered sections, said water passingthrough the chambered sections from a low level of said part to a highlevel and from one end of said part to the other end in counter-currentwith the travel of said gases with a final exit of the gases from theheating surfaces of said sections at or near a point where cool feedwater enters said apparatus, and (6) an outlet for water or steam at ahigh level of said sections.

2. The combination of a base comprising a fire box and a horizontallyelongated combustion chamber, a plurality of connected chamberedvertical boiler sections, said sections comprising a front section, saidfront section having attached thereto a feed water inlet at the bottomof the section, cross horizontal and perpendicular water containingtubes, a controllable baffle for diverting the heating gases downwardlyfrom a high level to a low level of the front section, a hinged door forsecuring access to and for cleaning said sections and for divertingupwardly by said baffle, and a high level exit for the gases from thefront of said front section at a high level thereof, the travel of thegases through said combination being from front to rear through saidcombustion chamber and from rear to front through said sections and outthrough said high level exit.

3. In a heating apparatus, the combina tion with a base containing afurnace, a

horizontally elongated combustion chamber,

and a plurality of connected chambered vertical boiler sections, of aback section, said back section comprising a plane rear face,

an interior corrugated face forming with said plane face vertical watertubes, a horizontal low level water tube connecting said vertical tubes,a water header and steam dome connected with the top of said verticaltubes, an outlet from said header for the exit of steam or water, aninlet for water, said section comprising connections with said connectedsections for the inlet for water, a transversely arranged opening at thebottom of said section for the passage of heating gases from saidcombustion chamber upwardly over said water tubes and to the crown sheetof the assembled sections of said apparatus.

4:. In a heating apparatus, the combination with a masonry basecontaining a grate,

being connected with the other sections by a water conveying channel ata high level of and intermediate between the sides of said sections andby low level water channels on both sides of said section, a waterconduit connecting thetwo low level water channels, said water conduitforming the roof of said combustion chamber, said water conduit whenunited and assembled with similar sections securing a closure of thespace between the sections in the roof of the combustion chamber andpreventing the immediate rising of gases from the fire mass of saidapparatus. up into the heating gas traversing passages of saidapparatus, and a gas traversing aperture at the rear of said apparatusfor the passing of gases from the combustion chamber into the gastraversing passages of said sections.

5. In a heating apparatus, the combina tion with a'base comprising acombustion chamber and a plurality of connected vertical chamberedsections resting transversely on said base, of a section, said sectioncomprising low level push nipple connect-ions and a high level pushnipple connection, a horizontal conduit connecting and at the lowestlevel of the push nipple openings, another horizontal conduitcommunicating wit-h vertical side and intermediate water tubes comprisedin said section, an intermediate vertical water tube connection betweenthe two horizontal conduits, an inclined roofing to the lower horizontalconduit for facilitating the conveyance of steam bubbles from said lowerhorizontal conduit to and up through the intermediate connecting tubeand thence to the top of the section, a water header and steam space forthe section, a water or steam outlet from said header, transverselyarranged fins projecting from the water tubes, triangular finsprojecting from the water tubes, the wider part of the triangular finsbeing at the crown sheet of the section, and strengthening ridgesbetween the faces of said header for strengthening the header againstinternal steam pressure.

6. In a heating apparatus, the combination of a plurality of connectedvertical chambered water sections comprising a front and a rear section,said sections having water conveying connections at the lower level ofthe sections on both sides of the sections and water or steamconnections at a high level of said sections, and one or more outletsfor water or steam at a high level of the sections, a feed water inletin the front section at a low level of said front section, the partsconnecting said sections comprising T flange unions bolted togetherthrough the flanges, said sections being constructed and arranged toreceive heating gases between the sections at or near the rear sectionand for the passage of the gases to a high level of the sections and forthe exit of the gases at the front of the front section.

7. In a heating apparatus, the combination with a plurality of connectedvertical chambered transversely disposed sections assembled and joinedand resting upon a base comprising a furnace and a horizontallyelongated combustion chamber, of means for introducing air forcombustion over the fuel mass of said apparatus, said air beingintroduced horizontally at a level not much above the upper level ofsaid fuel mass, said air being conveyed upwardly to near the chamberedsection at the front of said chambered sections, said air being thenconducted downwardly and discharged in a horizontally projected seriesof air currents or films of air at or near the top of the fuel mass, abridge wall at the rear of the fuel mass, provision in said sections forreventing the gases from said fuel mass rising directly between saidsections, means between the last and next to last of the sect-ions atthe rear of the apparatus for allowing the gas to rise between saidsections, means in said sections for securing a forward and a downwardflow of gases over each section and a counter-current upward flow offeed water through each section and for an exit of the gases from thefront section of said apparatus at a low level of said front section,and a feed water inlet at a low level of said front section.

JOSEPH MOSES WARD KITCHEN.

Witnesses:

BEATRICE MmvIs, Gno. L. WHEELooK.

copies of this patent may be obtained. for five cents each, byaddressing the Commissioner of Patents, Washington, D. 0.

